TB10.1 Example Applications: examples/Base/IPC/pubsub/publishspec.cpp Source File

00001 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
-00002 // All rights reserved.
-00003 // This component and the accompanying materials are made available
-00004 // under the terms of "Eclipse Public License v1.0"
-00005 // which accompanies this distribution, and is available
-00006 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
-00007 //
-00008 // Initial Contributors:
-00009 // Nokia Corporation - initial contribution.
-00010 //
-00011 // Contributors:
-00012 //
-00013 // Description:
-00014 // Demonstrates the speculative publishing pattern of a byte-array property
-00015 //
-00016 
-00017 
-00018 
-00023 #include "publish.h"
-00024 
-00025 LOCAL_D CConsoleBase* console;
-00026 
-00032 void PublishL(RProperty& aProperty,TDes16& aBuf)
-00033         {
-00034         TInt bufLength = aBuf.Length();
-00035         console->Printf(KTxtPublish);
-00036 
-00037         // Publish the property and handle the value returned appropriately
-00038         // Ignore the KErrNotFound error
-00039         TInt err = aProperty.Set(aBuf);
-00040         switch(err)
-00041                 {
-00042                 // No error, property is defined
-00043                 case KErrNone:
-00044                         {
-00045                         // Print array elements
-00046                         console->Printf(KTxtArray);
-00047                         for(TInt ix = 0; ix < bufLength; ix++)
-00048                                 {
-00049                                 console->Printf(KTxtArrayElement,aBuf[ix]);
-00050                                 }
-00051                         console->Printf(KTxtNewLine);
-00052                         }
-00053                         break;
-00054                 // Property is not defined, ignore this error
-00055                 case KErrNotFound:
-00056                         {
-00057                         console->Printf(KTxtNotFound);
-00058                         }
-00059                         break;
-00060                 // Leave if any other errors are returned
-00061                 default:
-00062                         {
-00063                         User::LeaveIfError(err);
-00064                         }
-00065                 }
-00066         }
-00067 
-00068 void DoExampleL()
-00069         {
-00070         console->Printf(KTxtSpecPublish);
-00071 
-00072         RProperty myProperty;
-00073         console->Printf(KTxtCreateHandle);
-00074         // Create a handle to the property
-00075         User::LeaveIfError(myProperty.Attach(KMyPropertyCat,KMyPropertyName,EOwnerThread));
-00076 
-00077         // Byte-Array to be published
-00078         TUint16 array[KArraySize] = {10,20,30,40};
-00079 
-00080         // Descriptor that the array contents are copied into
-00081         TBuf16<KBufSize> buf;
-00082 
-00083         // Copy array contents into the descriptor
-00084         buf.Copy(&array[0],sizeof(array));
-00085         buf.SetLength(KArraySize);
-00086 
-00087         // Publish the property
-00088         PublishL(myProperty,buf);
-00089 
-00090         // Change the array contents
-00091         array[0] = 0x00ab;
-00092         array[1] = 0x00bc;
-00093         array[2] = 0x00cd;
-00094         array[3] = 0x00de;
-00095         array[4] = 0x00ef;
-00096         array[5] = 0x00fa;
-00097 
-00098         // Copy array contents into the descriptor
-00099         buf.Copy(&array[0],sizeof(array));
-00100         buf.SetLength(KArraySize);
-00101         console->Printf(KTxtEnter);
-00102 
-00103         // Wait for a key press
-00104         while(console->Getch()!= EKeyEnter)
-00105                 {
-00106                 console->Printf(KTxtEnter);
-00107                 }
-00108 
-00109         // Publish the property
-00110         PublishL(myProperty,buf);
-00111 
-00112         // Indicate the publisher will not publish any more values
-00113         buf.Copy(KStop);
-00114         console->Printf(KTxtEnter);
-00115 
-00116         // Wait for a key press
-00117         while(console->Getch()!= EKeyEnter)
-00118                 {
-00119                 console->Printf(KTxtEnter);
-00120                 }
-00121 
-00122         // Publish the property
-00123         PublishL(myProperty,buf);
-00124 
-00125         // Close the handle
-00126         myProperty.Close();
-00127         }
-00128 
-00129 GLDEF_C TInt E32Main()
-00130         {
-00131         __UHEAP_MARK;
-00132         CTrapCleanup* cleanup = CTrapCleanup::New();
-00133 
-00134         TRAPD(createError, console = Console::NewL(KTextConsoleTitle, TSize(KConsFullScreen,KConsFullScreen)));
-00135         if (createError)
-00136                 return createError;
-00137 
-00138         TRAPD(mainError, DoExampleL());
-00139         if (mainError)
-00140                 console->Printf(KTextFailed, mainError);
-00141         console->Printf(KTextPressAnyKey);
-00142         console->Getch();
-00143 
-00144         delete console;
-00145         delete cleanup;
-00146         __UHEAP_MARKEND;
-00147         return KErrNone;
-00148         }
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